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Table 1 Participant characteristics by school and intervention

From: teen Mental Health First Aid: 12-month outcomes from a cluster crossover randomized controlled trial evaluation of a universal program to help adolescents better support peers with a mental health problem

 

tMHFAa

PFAb

Combined

School 1 (ICSEA = 1031)

 Eligible at assignment

159

170

329

 Sample at baseline (n)c

116

115

231

 Sample at 1 year follow-up (n)

61

61

122

 Age (M, SD)

15.92, 0.52

16.03, 0.52

15.97, 0.52

 Gender (% female)

36.21

38.26

37.23

 English First Language (% yes)

74.14

74.78

74.46

School 2 (ICSEA = 1050)

 Eligible at assignment

230

230

460

 Sample at baseline (n)

200

209

409

 Sample at 1 year follow-up (n)

116

133

249

 Age (M, SD)

15.65, 0.39

16.06, 0.40

15.86, 0.45

 Gender (% female)

48.00

45.45

46.70

 English First Language (% yes)

84.5

87.08

85.82

School 3 (ICSEA 1091)

 Eligible at assignment

300

280

580

 Sample at baseline (n)

231

233

464

 Sample at 1 year follow-up (n)

101

114

215

 Age (M, SD)

15.84, 0.42

15.76, 0.44

15.80, 0.43

 Gender (% female)

38.53

45.92

42.24

 English First Language (% yes)

85.28

83.26

84.27

School 4 (ICSEA 1097)

 Eligible at assignment

300

273

573

 Sample at baseline (n)

261

240

501

 Sample at 1 year follow-up (n)

185

120

305

 Age (M, SD)

15.89, 0.62

15.90, 0.64

15.89, 0.63

 Gender (% female)

49.04

48.75

48.90

 English First Language (% yes)

52.11

47.08

49.7

Total Sample

 Eligible at assignment

989

953

1942

 Sample at baseline (n)

808

797

1605

 Sample at 1 year follow-up (n)

463

428

891d

 Age (M, SD)

15.82, 0.51

15.92, 0.52

15.87, 0.52**

 Gender (% female)

43.94%

45.55%

44.74%

 English First Language (% yes)

72.77%

72.15%

72.46%

  1. aAll students in Year 10 received teen Mental Health First Aid training (tMHFA)
  2. bAll students in Year 10 received Physical First Aid training (PFA)
  3. cAll students who completed student assent, age and gender, and at least one item on the John vignette were included in the analytic sample
  4. dAnalyses were conducted according to the intention to treat principle; all participants with missing data at follow-up were included in analyses (n = 1605) as well as an additional three students who gave data at follow-up only (n = 1608)
  5. **Significant group difference found at the p ≤ .001 level
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BMC Public Health

ISSN: 1471-2458

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